fallback for Makefile version if its not a git checkout (tarball)

This makes use of git export-subst to insert the current ref names.
If git describe fails because because an extracted tarball is used
to build from source then the fallback will get called and the last
part of the ref names will be used for the version variable.

if it is a git checkout and HEAD is the current tag:
- v3.00-beta

If it is a git checkout and HEAD is ahead of the latest tag:
- v3.00-beta-36-g24a6095

If it is a tarball from a tag created via 'git archive HEAD --format=tar':
- v3.00-beta

If it is a tarball from the master created via 'git archive HEAD --format=tar':
- master

NOTE: If a tarball is manually created (without git archive) then the
version will "$Format:%D$", however before this commit it would not be
possible to build a release tarball that is not a git checkout (because
git describe would fail)
pull/346/head
anthraxx 8 years ago
parent 247d193146
commit a4e1692647

1
.gitattributes vendored

@ -0,0 +1 @@
src/Makefile export-subst

@ -80,7 +80,7 @@ CC_WIN_64 := x86_64-w64-mingw32-gcc
##
COMPTIME := $(shell date +%s)
VERSION_TAG := $(shell git describe --tags --dirty=+)
VERSION_TAG := $(shell git describe --tags --dirty=+ || echo '$Format:%D$'|sed -r 's/.* ([^ ]+$)/\1/')
##
## Compiler flags

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